Internal-combustion engine.



F. N. ISHAIVI.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED APR. 25| 1913.

2 SHEETS-SHEET I.

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ff" l or Nnw'LoNnoN, CONNECTICUT, assrGNon or ONE-SIXTH 'ro FNNLIN N. is:

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FRANK IDYTON ONE-SIXTH T0 EDWARD W. JBARLOW, BOTH 0F NEW YORK, N. Y.

INTERNlL-COMBUSTION ENGJINE.

Application led April'25, 1913. Serial N 0. 763,681.

To all lwhom 'it may concern.'

Be it known thatl, FRANKLIN N. ISHAM, a citizen of the' United States, residing at New London, in the county of New London and State of Connecticut, have invented cer.-

tain new and useful improvements in lnl ternal-Combustion Engines, of which the following is a specification.. l

This invention relates to internal combustion engines, and it relates particularly to means for cooling the operative parts of Y pa-nying drawings in which;

i showing the means for admitting oil to the inner face of the cylinder from theoil reservoir; and Fig. 5 is an enlarged?y sectional view showing the means of securing to the piston a ball forming part of the/bonnection between the piston`and the connecting rod.

ln these drawings 1 representt the frame of the engine, the construction(l bf which is immaterial as to details. In the present form the frame has bolted to it a cylindrical shell 2 ,to which is attached the head 3 which forms the upper` end of the cylinder. The shell 2 has projecting inward ltherefrom near its lower end a llange lLand below such flange is arranged a packing 5 interposed between the shell and a portion of the cylinder. f

The cylinder employed is composed principally of a tube 6 having formed therewith at one end a flange 7 which rests in an annular groove in the upper end ot the shell 2 and is thereby retained in position, lin

the construction herein shown the head 3 rests upon the flange 7 of the tube and is secured by bolts 8 to the shell 2, the cylinder being held in place by clamping between the head and the shell without introducing bolts through the flange 7 thereby allowing such Lange to expand and contract without injury. An annular chamber 2a is formed between the shell andthe cylinder for the reception of a liquid for cooling the exterior of the cylinder. Preferably though not necessarily there is introduced around the upper end of the tube 6 a strengthening ran-,atea .rune entiere.

jacket '9l by which the upper part of the tube is reinforced.

The principal portion of the piston consists of a tube 10 having formed on the inner face thereof a ange 11 and. having the upper end reduced forming a space betweenI such reduced end and the inner face of .the cylinder for the reception of packing rings 12. Attached to the upper end of the tube 10, in any suitable way, as by bolts 13 is a strengthening head 14. Extending through the tube 10 below theflange 11 are a series of holes 10"L which form part of the communication betweenv an oil reservoir to be described hereinafter, formed inthe piston, and the inner face of the tube 6 of the cylinder. y I

Arranged within the tube 10 is a shell 15 substantially in the form of a truncatedV cone which has formed with it at its lower end an annular flange 16 the diameter of which flange is the same as that .of the interior diameterof the tube 6. The flange vof the shell 15 rests below and in contact with the ange 11 of the lower portion of the tube 10 permitting'the ready introduction and removal of the shell. The arrangement of the shell'15 which is of a length toA leave a space between its upper end and the upper inner face oi the'tubcx 10 and is of v less diameter than that of the tube, is such` as to leave bet-Ween such shell and the tube a space 17 for the reception of a cooling fluid. The means herein shown for introducing the cooking fluid consists of a pump 18 mounted in the lower portion of the frame 1 ot the engine and having its lower end communicating with a supply passage 19. rlhe hollow piston 2O of the pump is attached to the flange of the tube 10 a-ndshell 15 in a manner to reciprocate therewith, and thus permit of the reciprocating movement of in the up and down movement of the piston water or other fluid is intermittently -inr jected into the space 17. An outlet pipe 21 communicates with the upper portion of the space 17 at a point removed from the point of introduction of the water or the like and serves to conduct from the engine the lifiuid injected by the pipe 18 after circulating in,

diameter of the lower portion 28 of the pis-.- ton. The connecting rod 24 is hollow, andA the upper disk 26 has in it an. opening 29 which permits the entrance of oil to the'hollow rod from an oil reservoir 30. The lower disk has the enlarged semi-cylindrical'part thereof cut away to form an opening 31 to the connecting rod in the operation of the engine. l

The oil reservoir is forced by attaching to the upper. disk 26 a plate 32 having in the centralv portion thereof a hollow dome-shaped portionand provided around its edge with a flange 33 having therein on its lower face the grooves 34, The exterior diameter of the flange 33 is 4somewhat less than that of the inner diameter of the tube 10 and therefore when the parts are assembled there is left between the edge of such flange and the inner face of the tube an annular passage 35 which communicates with the reservoir 30 through the passages formedby the grooves in the lower face of the flange 33, and with the inner face of the cylinder through the -holes 10a.

The parts of the bearing for the sphere 25, composed of the disks l26 and 27 the plate 32 and the shell 15 are all secured to the` flange 11 of the tube 10 by means of bolts 36, the heads of which are preferably toward the lower open end of the cylinder, permitting their ready removal to allow of the separation and removal lof any of the parts. e

Oil is `injected into the reservoir 20 yby means of a pump 37 the hollow piston rod 38 of which is secured tothe disks 26 and 27, in a position to have its upper end flush with the upperv face of the disk 26. The end of the hollow piston-rod is arranged-below the flange 33 and communicates with one of the grooves 34 in such flange. The

lower ,end of the pump communicates witha reservoir 39 which contains oil or is in communication with an oil supply.

The described arrangement provides an easily assembled and compact structure whereby a supply of cooling liquid may constantly be injected into and allowed to escape from the interior of the piston, insuring its uniform cooling. It also provides for the -means whereby oil under pressure is introduced into the reservoir, and from thence if forced between the cylinder and piston, into the bearing of the spherical end of the connecting rod and through the connecting rod to the crank pin. An excess of oil will be discharged from the lower end of the cylinder and around the crank pin, and may be caught in a reservoir formed in the lower portion of the frame of the engine, and reuse I claim;

1. An internal combustion engine having a piston comprising a hollow body, a shell of a smaller size than the body arranged therein forming a chamber between the shell and the inner face of the hollow body, a pump having a reciprocating hollow piston connected to the piston andcommunicating with the chamber, and a telescoping discharge pipe connected with the chamber.

2. An internal, combustion engine having a piston comprising a hollow body having an inwardly extending flange, a shell of a smaller size than the body .arranged therein forming a chamber between the shell and the inner face of the hollow body, the shell being provided at its lower end with a flange bearing against the inwardly extending flange of the hollowbody, a pump having a hollow piston extending through the flange and communicating with the cham-` secu'red thereto, a pump having a hollow' piston extending through the flanges and communicating with the cooling chamber, and atelescoping discharge pipe connected with the chamber. f

In testimony whereof I affix my signature in presence of two witnesses.

FRANKLIN N. ISHAM. Witnesses:

A. G. DU Bois, PHILIP F. LARNER. 

